Laughlin AFBs largest waste stream in 1995 was chromic acid. The acid was generated from a process that utilizes alodine (chromic acid, hydrofluoric acid, and potassium ferricyanide) to prepare aluminum surfaces for priming and then painting.
Laughlin purchased an alodine evaporation system to concentrate the chromic acid waste stream. Instead of disposing of the entire mixture as a hazardous waste, Laughlin is evaporating the water out and reducing amount of alodine for disposal.
Laughlin AFB generated 57 55-gallon drums of alodine prior to this project. This project has reduced the amount to two drums of waste for disposal.
Details of Reductions
Additional Information :
Initial capital cost of the project was $54,000 with a payback period of 1 year. Laughlin AFB realized a disposal cost savings of $41,330. This amount stems from reducing the total weight of 25,228 lbs generated to only 916 lbs of that being disposed of. That is a reduction of 24,312 lbs at $1.70/lb.